Carburetor



July 24, 1934.

c. I. JUSTHElM GARBURETOR Filed July 20, 1933 d/ararzce .Z JLJIWe/m azlwPatented July 24, 1934 UNITED STATES PATENT OFFICE 1,967,619 omuaa'ronClarence I. Justheim, Salt Lake City, Utah Application July 20, 1933,Serial No. 681,394

11 Claims.

My invention relates to suction devices for internal combustion enginesand more particularly to devices for more completely carbureting thefuel before it is introduced into the cylinders of the engine. v

A further object is to provide a device which may be used with anysuction device or carburetor on an internal combustion engine to movecompletely carburate the fuel, mixing it with suflicient air, or aeratedfuel, or direct fuel, to provide a mixture for the engine which will becompletely carbureted for consumption therein. A still further object isto provide a suction device in the form of an annular ring surroundingthe suction device used on the engine and in open connection therewithby radial ports, the annular ring beingplaced at some advantageousposition on the suction device or carburetor so as to have suflicientsuction created in the ring to draw fuel thereinto from a fuel supply orto draw the correct amount of air as fuel mixture thereinto, dependingupon the hook up made and amount of fuel and air already mixed in thecarburetor or suction device.

A still further object is to provide a controlled annular ringcontrolled either by suction or external means and which will drawsuflicient fuel, or vapors, or air into the suction device to create abalanced fuel for the engine.

A still further object is to provide an annular chamber surroundingeither a suction device or the intake manifold of an internal combustionengine with ports leading fromthe annular ring into the manifold orsuction device to draw fuel or air or fuel vapors into the device withthe carburetor and the intake manifold of an internal combustion engineto provide additional air for the fuel or to provide additional air andfuel to the already carbureted fuel passing into the intake manifold ofthe engine.

These objects I accomplish with the device illustrated in theaccompanying drawing in which similar numerals and letters of referenceindicate like parts throughout the several views and as described in thespecification -;forming a part of this application and pointed out inthe appended claims. 1

In the drawing in which I have shown the device,

Figure 1 is a diagrammatic view' of one of my devices in use on one ofmy suction devices,

as shown in my patent applications of an earlier date.

Figure 2 is a vertical section of one of my devices in place between theintake manifold of an internal combustion engine and the portion of anycarburetor which is attached thereto.

Figure 3 is a cross section of one form of making the annular ring withmeans to control the ports into the interior.

Figure 4 is a cross section of an annular ring divided into twocompartments with separate springs to control the ports in eachcompartment.

Figure 5 is a cross section of an annular ring with a jet shown in onecompartment and a baflle partition in the other portion with springmeans to control the ports.

Figure 6 is a cross section of an annular ring having an annularpartition or baflie therein with valves to control the portstherethrough both insideand outside the partition.

Figure '7 is a cross section of an annular ring or chamber divided intoseveral compartments each having the ports controlled except one has anuncontrolled port for idling fuel, high speed fuel or other suitablepurposes where it is not desired to control the port by the suction ofthe device.

Figure 8 is a cross section of an annular ring or chamber divided intoseparate compartments with one controlled by suction from one of theother compartments.

In the drawing I have shown the device as an annular chamber or ring Aformed in an annular casting B. The float chamber is shown as C, withthe lead in pipe showing into the fuel therein. 'JI'he casting B may bemade in two parts 1 and 2 secured together by bolts 3 and 4 as shown inFigure 3 andFigure 5 of the v drawing or may be made of two rings 6 and7 secured together by end plates 8 and 9 as shown in Figure 2 of thedrawing.

The type of device shown in Figure 3 is made with an inlet pipe 10 tocarry fuel or air into the annular chamber A and ports 11 carry the fuelor air into the interior of the suction device with which the device isbeing used. Spring valves 13 and 14 control the flow of such fuel or airthrough the ports commensurately with the amount of suction through thedevice and in cases of great suction through the center bore 15 of thering the spring will close ofi all of the ports allowing only the fuelin case pipe 10 is used to supply fuel from the mixing device orcarburetor to enter the engine as would no be necessary for high speedsor extreme power requirements.

In Figure 4 I have shown the annular ring divided into two sections 16and 1'7 with ports 18 through the inner wall of the ring into the bore19 and having springs 20 and 21 to control the ports. Two inlet pipes 22and 23 provide air'or fuel or a combination of both for the device.

In Figure 5 I have shown the ring divided into two sections 25 and 26with a semi-circular baffle 27 in the section 26 said bafile carryingspring valves 28 and 29 thereon, one of which is on the inside of thebaffle and the other on the outside, said springs to control ports 30through the baflle. The spring 28 to close as the suction increasesthrough the device and. the spring 29 to open as the suction increases.An idling port 30a may be provided through the bafile 27 and is notcontrolled by any spring or valve.

Ports 31 connect the interior bore 32 of the ring with the chamber orsection 26. The section 25 is provided with ports 33 therethrough, oneof which ports carrying a jet 34 screwed thereinto with the jetextending into the bore 32 of the device and with a spring control 35 tocontrol the fuel or air passing both through the jet and the ports 33.

Inlet pipes 36 and 3'7 provide the ring or chamber with fuel, or air, orfuel and air, as necessary.

In Figure 6, I have shown the annular chamber having an annularpartition or baflie 39 with ports 39a through the partition and ports 40into the interior bore of the chamber so that suction through the borewill draw through the two sets of ports. Along the inner side of thepartition covering some of the ports I provide a spring valve 41, saidvalve to open when suction through the ports 40 is increased, and alongthe outside of the partition I provide a similar spring valve 42 to shut01f some of the ports 39a when the suction through the device isincreased. The ports 39a may be made in different sizes and the twotypes of controls both internaland external used to create the exactproportions of air and fuel desired. Inlet pipes 43 may be provided tointroduce either fuel, or air, or fuel and air, as desired.

In Figure 7 I have shown the annular chamber divided into separatechambers 45, 46 and 4'7. The chamber 45 has an inlet pipe 48 therein toprovide fuel therefor and is uncontrolled. The chamber 46 has an inletpipe 46a to provide either fuel or air or both as desired. A controlledvalve 49 in the chamber 46 controls ports 50 into the interior of thebore of the ring. The ,control for the valve may be a set screw 51 asshown having adjustment nuts 52 and 53 mounted thereon as desired toadjust the amount of closure or the tension of the valve as necessary.In the chamber 47 I provide a semi-circular partition 55 having ports 56therethrough, said ports being controlled by a spring valve 57. An inletpipe 58 provides fuel, or air or both for this chamber as necessary.

In Figure 8 I have shown the annular chamber divided into three chambers59, 60 and 61, with only two lead in pipes shown as 62 and 63 leadinginto the chambers 59 and 60 and the fuel or air for the chamber 61 isdrawn from the chamber 59 through a port 64 therein, controlled by aspring valve 65. This valve may be mounted on either side of thepartition depending upon the work desired or required thereof, thesuction to either close or open the port'as necessary. Ports 66 arebored through the inner wall of the chamber 61 and a valve 67 controlsthe flow of fuel or air therethrough with the valve provided with asmaller port 68 therethrough in alignment with one of the ports 66 tocontrol or partially control the passage through this port. Ports 70connect the bore of the annular chamber with the chamber 60 and a valve71 controls the flow of fuel therethrough. Idling port 73 is provided inthe chamber 59 to draw uncontrolled fuel into the bore of the device asnecessary.

As shown in the drawing in Figure 1, I have shown the lead line from thefuel leading down into the float chamber C, into the fuel therein tosupply fuel into the annular chamber, which fuel is then drawn into thesuction device for use. The port for air is shown on the opposite sideto allow suflicient air to enter the chamber as desired.

In the other views I have shown either a single line to lead fuel, orair or fuel and air already combined or two or three lines to lead infuel in the mixed form or fuel in the form of air. This fuel air may bemixed with the fuel already passing through the carburetor or suctiondevice or may be mixed with fuel in the annular ring as the case may beto provide the proper fuel mixture for the engine.

The suction through the suction device draws through the ports in theannular chamber and the ports are closed or opened by the force of thesuction,-depending upon the positioning of the valves for closing the.ports. The tension of the springs may be difierent or may be varied andthe size of the ports may be varied to give any desired combination ofeither fuel in the raw form, mixed fuel, or fuel air.

The operation of the springs as shown in Figme 6 is such that as onespring closes the other spring opens and in that manner the ports may becontrolled to any desired degree.

Having thus described my invention I desire to secure by Letters Patentand claim:

1. In a device for use on suction devices of the class described, thecombination of an annular ring surrounding a suction device with portsfrom the ring into the suction device; partitions dividing said. ringinto separate chambers; lead lines from each chamber to a source of fuelsupply; a semi-circular baflie dividing one of said compartments withports through said bafile; and valves to control such ports as desired.t

2. In a device for use on carburetion suction devices, the combinationof a suction device; an annular hollow ring formed therearound;partitions dividing the annular ring into separate chambers with onechamber having a port to connect with the interior of the suctiondevice; means to control ports connecting the interior of two suchchambers with the suction device; a baflle carried in one of thechambers having ports therethrough; and spring valves to control some ofthe ports in said battle as desired.

3. In a device of the class described, the combination of a suctiondevice: an annular ring formed therearound having the outer wall solidwith ports leading from the interior of the annular ring into the boreof the suction device; leaf springs mounted to said annular ring to bedrawn over said ports to control the suction therethrough; and a leadline into said annular ring to introduce fuel thereinto.

4. In a device for use on carburetion devices, the combination of anannular hollow ring to be placed around and concentric with acarburetion suction device to form an annular chamber with ports leadingfrom the interior of said annular chamber into the suction device; andsuction controlled means to control part of said ports as desired.

5. In a device of the class described, the combination of a hollow ringto form a chamber concentric with a suction device for an internalcombustion engine and means to introduce fuel into said chamber; anannular baille dividing the chamber into two compartments with portsthrough the baffle; means to control said ports depending upon thesuction therethrough; ports into the bore of the hollow ring from theinner compartment to allow suction to draw fuel therethrough from saidhollow ring.

6. In a device for use on 'carburetion devices, the combination of aclosed hollow annular ring surrounding a portion of the suction deviceand mounted above the fuel level having ports in open connection withthe bore of said suction device; means to introduce fuel into said ring;and semi-circular spring valves mounted adjacent said ports within saidannular ring to close said ports when the suction through the suctiondevice is increased sumcient to flex said spring valves to the closedposition.

7. In a device of the class described, the com bination of a closedhollow annular ring above the fuel level; means to introduce fuel intosaid ring; ports leading from the ring into the bore of the suctiondevice of an internal combustion engine; springs to control the suctionthrough some of said ports with other ports uncontrolled, the suctionthrough the device to close of! some of said ports commensurately withthe speed of rotation of the engine, depending upon th flexing of saidsprings.

8. In a device for use on carburetor suction devices, the combination ofan annular ring mounted concentric with said suction device and abovethe fuel level thereof with ports leading into the suction device fromsaid ring; spring valves to control the suction through some of saidports with other ports uncontrolled, the suction through the device toclose off some of said ports commensurately with the suction through thecarburetor the closing of the ports depending upon the flexing of saidspring valves.-

9. In a device of the class described, the combination of an annularring to surround the intake manifold of an internal combustion enginehaving ports leading from the interior thereof into'the bore of thesuction device; an annular ported bame formed within said ring dividingthe ring into two annular chambers with the inner chamber in connectionwith the bore of the suction device through said ports; and springsmounted onto said battle to control the suction through the portstherein said springs being adapted to close off some or all of saidports depending upon the amount of suction created in the inner annularchamber.

10. In a device of the class described, the combination of an annularring formed of an inner ring and an outer ring secured by top and bottomannular plates with ports through the inner ring; a spring carried onsaid inner ring to, close said ports when suction through the bore ofthe inner ring is increased; and means to introduce fuel through thewall of the outer ring.

11. In a suction device for use in conjunction with carburetors forinternal combustion engines, the combination of an annular hollow ringcarried concentric with the bore of said carburetor and spaced above thefuel level thereof; partitions in said ring to divide it into separatechambers with ports into the bore of the entire hollow ring tocommunicate with the bore of the carburetor; a semi-circular partitionin one of said chambers with ports through said partition; a floatchamber. means to introduce fuel into the hollow ring from said floatchamber; and a spring valve to control ports through said semi-circularpartition commensurate with the suction through the carburetor.

CLARENCE I. JUS'I'HEIM.

